i will be buying a prep machine this time but there will be times when I will have to make bottles myself.
So my understanding of the nhs guideline is that I have to use freshly boiled water, leave it to cool down but use it within 30 min??
What happens in the middle of the night when you me baby is screaming??? I’m thinking even if I fastworward the cooling period and put the bottle in a pot of cold water, it would still take 15 min the minimum which in my opinion is a hell of a long time when a newborn is screaming 
Or am I missing something?
Last time I had a baby I used to use boiled water and filled up all the sterilised bottles then use them up within 12hrs or so and just put the powder in when needed.
That’s obviously isn’t advisable anymore?